Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1124/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :26/03/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : PERMANENT MAGNET EMBEDDED ROTOR FOR ROTATING ELECTRIC MACHINE AND
ROTATING ELECTRIC MACHINE
(51) International classification :H02K (71)Name of Applicant :
(31) Priority Document No
:2011- 1)KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
070377 Address of Applicant :2-1, TOYODA-CHO, KARIYA-SHI,
(32) Priority Date :28/03/2011 AICHI-KEN Japan
(33) Name of priority country :Japan (72)Name of Inventor :
(86) International Application No
Filing Date
:NA
:NA
1)KAGAMI, MASANO
2)UMEYAMA, RYO
(87) International Publication No : NA 3)NAKANE, YOSHIYUKI
(61) Patent of Addition to Application Number
Filing Date
:NA
:NA
(62) Divisional to Application Number
Filing Date
:NA
:NA
(57) Abstract :
An accommodating recess (21A, 21B) has a magnet accommodating portion (19A, 19B) for accommodating a permanent magnet
(17A, 17B) and a cavity (20A, 20B), which is located at the q-axis side of the magnet accommodating portion (19A, 19B). The
cavity (20A, 20B) opens through a rotor outer circumferential surface (162). A starting point (Pal, Pbl) of an outer cavity forming
surface (201A, 201B) is located on the rotor outer circumferential surface (162). The outer cavity forming surface (201A, 201B)
intersects either a magnetic pole surface (170A, 170B) or an imaginary extended plane (23A, 23B) of a magnetic pole facing
surface (191A, 191B). The rotor outer circumferential surface (162) includes portions of an imaginary annular line (E). A starting
point (Pal, Pbl) of the outer cavity forming surface (201A, 201B) is located between the d-axis and an intersection point (Qa, Qb)
between the imaginary annular line (E) and the imaginary extended plane (23A, 23B) of the magnetic pole facing surface (191A,
191B)-
No. of Pages : 42 No. of Claims : 8
The Patent Office Journal 21/06/2013 13653